Sensitivity of a simulated winter storm to WRF model physics over complex terrain [presentation]
Cheng, W. Y. Y., Liu, Y., & Warner, T. T. (2009). Sensitivity of a simulated winter storm to WRF model physics over complex terrain [presentation]. In 10th WRF Users' Workshop. University Corporation for Atmospheric Research: Boulder, CO, US.
In this study, we simulated the 16 - 18 April 2009 winter storm in Colorado using the NCAR/ATEC WRF-ARW-based Real-Time Four-Dimensional Data Assimilation (RTFDDA) and forecasting system (Liu et al. 2008). A series of high resolution sensitivity experiments (Δx = 3.3 km) were conducted with diffe... Show moreIn this study, we simulated the 16 - 18 April 2009 winter storm in Colorado using the NCAR/ATEC WRF-ARW-based Real-Time Four-Dimensional Data Assimilation (RTFDDA) and forecasting system (Liu et al. 2008). A series of high resolution sensitivity experiments (Δx = 3.3 km) were conducted with different combinations of surface layer, LSM, PBL, and microphysics in WRF to study the performance and roles of these physics processes in simulating the aforementioned winter storm. This study is part of a NCAR-Xcel Energy joint development of a WRF-RTFDDA based wind forecasting system. The goal of this study is to understand the impact of WRF physics options for explicit prediction (i.e. without sub-grid cumulus parameterization) of winter storms over complex terrain. Show less
